Wild blueberries.
http://www.simply-blueberries.com/orac.html
I can’t find any, so I eat cultivated blueberries.
You need to find some marshy land where there had been a fire a few years earlier. The blueberries come up with the regrowth like you wouldn’t believe.
“I can’t find any”
Trader Joe’s has frozen Canadian wild “organic” blueberries